131302211133209 has 4 divisors (see below), whose sum is σ = 131302234439460. Its totient is φ = 131302187826960.

The previous prime is 131302211133179. The next prime is 131302211133227. The reversal of 131302211133209 is 902331112203131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 71713121089600 + 59589090043609 = 8468360^2 + 7719397^2 .

It is a cyclic number.

It is not a de Polignac number, because 131302211133209 - 2²⁸ = 131301942697753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131302211133109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2647019 + ... + 16419839.

It is an arithmetic number, because the mean of its divisors is an integer number (32825558609865).

Almost surely, 2^{131302211133209} is an apocalyptic number.

It is an amenable number.

131302211133209 is a deficient number, since it is larger than the sum of its proper divisors (23306251).

131302211133209 is an equidigital number, since it uses as much as digits as its factorization.

131302211133209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23306250.

The product of its (nonzero) digits is 5832, while the sum is 32.

The spelling of 131302211133209 in words is "one hundred thirty-one trillion, three hundred two billion, two hundred eleven million, one hundred thirty-three thousand, two hundred nine".